But we’re also looking forward to checking out some of the other, more low-profile green building startups, ones working on technologies that don’t necessarily have the wow-factor of an eco-chic prefab pad. Like Perpetual Water, a four-year-old Australian water conservation technology company that will be showing off its “Garden Angel” system that recycles laundry water for reuse as lawn and irrigation water. Or BioBased Insulation’s soy-based insulation that can make homes more energy efficient.